In “Mix-Ups & Mistletoes,” Trish (Raini Rodriguez) is organizing a Kids Club holiday party at which Austin (Ross Lynch) and Ally (Laura Marano) will perform their original holiday song and distribute Austin Moon dolls. But a mix-up at the toy factory leads to a scramble.

Meanwhile, Trish puts Dez (Worthy) and his arch nemesis Chuck through a competition to determine who will be a better Santa for the party.